package Demo01;

public class StringBuider03 {
    public static void main(String[] args) throws Exception
    {
        StringBuffer builder = new StringBuffer(30);
        builder.append("edu.yootk.com").insert(0, "李兴华编程训练营：");
        System.out.println(builder.replace(9, 25, "www.yootk.com").delete(0,9));
    }
}
